The biggest problem with mobile phone privacy (assuming you seek it) is that no matter how trustworthy and privacy respecting the operating system and its software is, the baseband modem is usually at the behest of the network provider and also generally has full access to the main CPU and memory. There is one project I am aware of that is looking to address this problem - the Neo900 [1].

The platform should hopefully be 100 % trustworthy (from an "it's free software so I can inspect it" point of view), as long as you do not choose to use a non-free graphics driver.

[1] https://neo900.org/

Nobody cares about perfect privacy, but people do care about Total Information Awareness. This is going in TIA direction, in fact it's already there. It's sickening. So I am happy to be a Linux user, and it's the right time to switch. Say goodbye to your corporate overlords and come on down here. The privacy is fine.

Let's not talk about "perfect privacy" when we could still be happy with "reasonable privacy". Just because not everything is private by default, doesn't mean we should be okay with the ever more invasive privacy policies of these companies.

It reminds me of the argument that "of course NSA spies, that's what it does" completely merging together the spying on dangerous targets for national security with the spying on every single person on Earth and for economic, blackmail and so on purposes. Reality is more nuanced than that.

Yes. http://repo.xposed.info/module/biz.bokhorst.xprivacy